AutoCodes – GMC – P0222 2018 GMC Sierra

P0222 2018 GMC Sierra Code - Throttle Position Sensor 2 Circuit Low Voltage

Quick Answer

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly circuit poor electrical connection. Severity is High - diagnose this code as soon as possible. Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

What it means: P0222 2018 GMC Sierra indicates Throttle Position Sensor 2 Circuit Low Voltage.
Common causes: Common causes include Faulty Throttle Body Assembly, Throttle Body Assembly harness is open or shorted, Throttle Body Assembly circuit poor electrical connection.
Severity: High - diagnose this code as soon as possible.
Can I drive?: Driving is not recommended if the warning light is flashing, the engine runs poorly, or safety-related symptoms are present.

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Code Popularity 209

How popular is this code, among other codes? Low

Repair Importance Level

Urgent (Diagnose now) (3 / 3)

Repair Difficulty Level

Advanced (Pro) (3 / 3)

What is this?

Table of contents Created and updated by William Orellana on May 20, 2022

Description
Possible Causes
How To Fix
Tech Notes ▶
Cost to Diagnose
FAQs
Comments
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Code P0222 2018 GMC Sierra Description

The Throttle Body Assembly contains a contact-less inductive throttle position sensing element that is managed by a customized integrated circuit. The throttle position sensor is mounted within the throttle body assembly and is not serviceable. The Engine Control Module (ECM) supplies the throttle body with a 5 V reference circuit, a low reference circuit. The asynchronous signal means communication is only going from the throttle body to the ECM. The throttle body cannot receive data from the ECM over the signal/serial data circuit. The throttle position sensor provides a signal voltage that changes relative to throttle blade angle. The throttle position sensor information is transmitted between the throttle body and the ECM on the signal/serial data circuit. The ECM decodes the serial data signal and is used as voltages for throttle position sensor 1 and 2. The Diagnostic Trouble Code (DTC) will be set when the ECM detects the throttle position sensor 2 signal voltage is less than 0.25 V for greater than 1 s.

OBDII Code P0222 2018 GMC Sierra - Throttle Position Sensor 2 Circuit Low Voltage - AutoCodes.com — P0222 2018 GMC Sierra Code - Throttle Position Sensor 2 Circuit Low Voltage

What does this mean?

What are the Possible Causes of the DTC P0222 2018 GMC Sierra?

Faulty Throttle Body Assembly
Throttle Body Assembly harness is open or shorted
Throttle Body Assembly circuit poor electrical connection
Faulty Engine Control Module (ECM)

How to Fix the DTC P0222 2018 GMC Sierra?

Review the 'Possible Causes' above and visually examine the corresponding wiring harness and connectors. Check for damaged components and inspect connector pins for signs of being broken, bent, pushed out, or corroded.

What does this mean?

Code Tech Notes

User Submitted Video

What is the Cost to Diagnose the Code?

Labor: 1.0

To diagnose the P0222 2018 GMC Sierra code, it typically requires 1.0 hour of labor. Rates vary by location, vehicle, and shop. Many shops charge between $80–$150 per hour; dealerships and metro areas may be higher, independents may be lower.

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About the author: William Orellana is a Master Mechanic and Mechanical Engineer with over 30 years of experience diagnosing and repairing vehicles. Learn more about his background.

Frequently Asked Questions about P0222 2018 GMC Sierra Code

1. What are common symptoms of OBDII code P0222 on a 2018 GMC Sierra related to the Throttle Position Sensor 2 Circuit Low Voltage?

The common symptoms include reduced engine power, hesitation or stalling, and illuminated Check Engine light.

2. What are the potential causes of the OBDII code P0222 on a 2018 GMC Sierra indicating Throttle Position Sensor 2 Circuit Low Voltage?

The code P0222 may be triggered by a faulty throttle position sensor, damaged wiring or connectors, low battery voltage, or a problem with the engine control module (ECM).

3. How can I diagnose the Throttle Position Sensor 2 Circuit Low Voltage issue on my 2018 GMC Sierra?

You can diagnose the issue by using an OBDII scanner to read the trouble codes, visually inspecting the throttle position sensor and its wiring, performing voltage tests, and checking for any loose connections.

4. What are the repair options for resolving the Throttle Position Sensor 2 Circuit Low Voltage problem on a 2018 GMC Sierra?

Repair options include replacing the throttle position sensor, repairing or replacing damaged wiring or connectors, checking and charging the battery, and reprogramming or replacing the engine control module if necessary.

5. Can I continue driving my 2018 GMC Sierra with the OBDII code P0222 indicating Throttle Position Sensor 2 Circuit Low Voltage?

It is not recommended to drive the vehicle with this issue as it can lead to poor engine performance, potential stalling, and further damage. It is advisable to address the problem promptly.

6. How much does it typically cost to repair the Throttle Position Sensor 2 Circuit Low Voltage issue on a 2018 GMC Sierra?

The cost of repairing this issue can vary depending on the specific cause and the shop's labor rates. However, it may range from $100 to $300 for parts and labor.

7. What steps can I take to prevent the recurrence of the Throttle Position Sensor 2 Circuit Low Voltage problem on my 2018 GMC Sierra?

To prevent a recurrence, it is essential to ensure regular maintenance of the throttle position sensor, inspect and maintain the wiring and connectors, and address any related issues promptly to avoid further complications.

8. Will disconnecting the battery reset the OBDII code P0222 on a 2018 GMC Sierra?

Disconnecting the battery may reset the code temporarily, but it is not a permanent solution. It is crucial to diagnose and address the underlying issue to prevent the code from reappearing.

9. Can a DIY enthusiast replace the throttle position sensor to fix the Throttle Position Sensor 2 Circuit Low Voltage issue on a 2018 GMC Sierra?

Replacing the throttle position sensor can be a DIY project for those with mechanical knowledge and the right tools. However, if unsure, it is advisable to seek professional help to ensure proper installation and avoid further complications.

10. How long does it take to repair the Throttle Position Sensor 2 Circuit Low Voltage issue on a 2018 GMC Sierra?

The repair time can vary depending on the extent of the problem and the availability of parts. On average, it may take approximately 1-2 hours for a skilled mechanic to diagnose and replace the throttle position sensor.